讲解一下电缆桥架配件知识
电缆桥架适合用于工矿企业室内外架空敷设电力电缆、控制电缆，也用于电信、广播电视等部门的室内外架设。电缆桥架是由托盘或梯架的直线段、弯通、组件以及托臂（臂式支架）、吊架等构成具有密接支撑电缆的刚性结构系统之全称。它是随管廊一起搭设的放置电缆线的线槽类的金属架。电缆桥架厂具有品种全、应用广、强度大、结构轻、造价低、施工简单、配线灵活、安装标准、外型美观等特点。
Cable tray suitable for use in industrial and mining enterprises inside and outside aerial power cable, control cable laying, also used in telecommunications, broadcasting and television departments such as indoor and outdoor set up. Cable tray by tray or a straight run of ladder, curved, components and bracket timbering (arm), hanger, etc with contact support the full name of the rigid structure of the cable system. It is raised with the pipe rack placed cable trough type metal frame. Cable tray factory have all varieties, wide application, intensity big, light structure, low cost, simple construction, flexible wiring, installation standards, appearance, etc.
为了规范电缆桥架配件和电缆桥架市场，相关部门公布了桥架配件的标准定义。电缆桥架厂家提醒诸位，电缆桥架的购买也是极其重要的，配件的选择需要、抗压，能满足施工需要。常用的电缆桥架有三通、弯头、异径、螺丝、扣锁、托臂、吊杆、横担、连接片、接地线等等。
In order to standardize the market for cable tray accessories and cable tray, related department released the standard definition of bridge accessories. Cable tray factory to remind you, purchase of cable tray is extremely important, the choice of accessories need to high quality, compressive strength, can meet the needs of the construction. Commonly used cable bridge has three links, elbow, reducer, screw, padlocks, bracket, derrick, cross arm, connecting pieces, ground wire, and so on.
常用的桥架附件有电缆终端接线盒、电缆中间接线盒、连接管及接线端子、钢板接线槽等等。对于振动场所，在接地部位的连接处应装置弹簧圈。桥架系统应具有可靠的电气连接并接地。当允许利用桥架系统构成接地干线回路时应符合一下要求：
Commonly used bridge accessories have cable terminal connector, cable junction box, connecting the middle tube and terminal blocks, wiring groove of the steel plate and so on. For vibration place, in the joint of ground parts should be spring coil. Bridge system should have reliable electrical connection and ground. When allowed to use bridge system grounding should conform to the requirements of main loop:
1、桥架端部之间连接电阻不能大于0.00033欧姆，接地孔应绝缘涂层。
1, the connection between the bridge end resistance is not greater than 0.00033 ohms, grounding insulation coating shall be removed.
2、在1kv及以下中性点直接接地系统中，受电设备的接地与系统中性线接地相连。
2, in the neutral point grounding system directly 1 kv and below, from electrical equipment grounding connected to the neutral grounding system.
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